Module 4 questions from Lawrence, Chapter 5 & 6:

I’m interested in examining whether heroin reduces pain. I give 10 human subjects the same dose of heroin every day for 2 weeks and then administer a strong shock. Afterwards, I ask them to rate their pain. On the first few days, subjects report experiencing no pain, but as the days go on, they report feeling more and more pain, even though the level of shock has been kept constant. On day 14, there is a fire in my research lab so I have to conduct the last administration at the local hospital. On this day, all subjects report that they don’t experience any pain following administration of heroin, even though they reported substantial pain from the same shock the day before. What process can best account for these findings?

Module 7 lecture questions:

Module 10 lecture questions:

Match the following media components with their role in selective or differential media types:   

Questions on the literary texts:

Module 3 questions from Lawrence, Chapter 3 & 4:

3.5 Zingaki izinyanga eziphakathi kokuvalwa kwalo mncintiswano nokumenyezelwa komphumela? Bhala ngesiZulu impendulo yakho. (1)

You inoculate a MSA plate with Staphylococcus epidermidis. After 24 hours of incubation at 37C, you observe white growth on pink media. This means that:

Module 4 lecture questions: